[U-Boot] [PATCH 3/4] rockchip: rk3188: add u-boot-specific mmc properties
Philipp Tomsich
philipp.tomsich at theobroma-systems.com
Fri Sep 21 09:15:57 UTC 2018
On 21.09.2018, at 10:59, Heiko Stuebner <heiko at sntech.de> wrote:
>
> The dwmmc controllers on rk3188 do not have idma support, so need to
> use the fifo-mode and it my tests they became confused and stopped
> working if the frequency was to high.
>
> While I only tested in somewhat bigger steps, 32MHz for example
> hung the controller, while reducing it to 16MHz worked just fine
> and is reasonably fast to load a kernel from mmc.
>
> Signed-off-by: Heiko Stuebner <heiko at sntech.de>
Reviewed-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
Acked-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
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